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G. B. SHIPLEY.

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APPLICATION FILED 11111.23; 1907.

995,331, Patented June 13, 1911.

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G. B. SHIPLEY.

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APPLICATION FILED JAN. 23, 1907.

Patented Ju e 13,1911.

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Patented June 13, 1911.

INVENTOR M N R D 1 T A APPLIGATION FILED JAN. 23, 1907.

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GRANT 1B. SHIPLEY, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-GI-IALMERSCOMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

JIG.

Specification of Letters Patent.

Patented June 13, 1911.

Application filed January 23, 1907. Serial No. 353,618.

To all whom it may concern:

Be it known that I, GRANT B. SHIPLEY, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofVisconsin, have invented certain new and useful Improvements in Jigs, ofwhich the following is a specification.

This invention relates to jigs for dressing and classifying ores andsimilar materials, and specifically it relates to the mechanism forimparting a desirable motion to the sieve.

On the drawings which accompany this specification and form a partthereof and on which the same reference characters are used to indicatethe same elements in each of the several views,Figure 1 represents, inside elevation, a embodying this invention. Fig. 2 is a plan view of thejig shown by Fig. 1. Fig. 3 is an elevation in cross section of thetaken on the line aa of Fig. 2 looking in the direction in dicated bythe arrow. Fig. l is an elevation in cross section taken on the line b?)of Fig. 2, looking in the direction indicated by the arrow. Fig. 5represents an elevation of the and shows a modification of the motioncontrolling mechanism for the sieve.

Referring to the drawings, the numeral 1 designates a hutch which isshown as constructed of planks supported by suitable timbers 2 and 3,the hutch being strengthened by angle irons 4, a frame of timbers beingconstructed about the center of the hutch and on the outside of the samecomprising uprights 5, longitudinal timbers 6, and cross timbers 7.Supported within the hutch is the sieve box 8 containing a sieve 9, uponwhich the ore is adapted to be received.

The general arrangement and the operation of this are similar to thoseat present in use and it is not deemed necessary to state at length thefunction and operation of the apparatus as jigs of this generalcharacter are extensively used in the art at present.

The numeral 9 designates the usual water pipe for conveying water to theinterior of the hutch; 1O designates the discharge pipes; 11 theoverflow; 12 the pulley by which power is received from some source ofpower by a belt and which operates the cam 13 which, acting against thecollar 14 secured to the shaft 15, depresses said collar and shaft,thereby depressing lever arms 16 and 17, which oscillate the shafts 18and 19, and elevate the arms 20, 21, 22, 23, and the links 24, 25, 26,27, which links support the sieve box 8 from their upper ends by meansof the hangers 28, 29, 30, 31.

The mounting of the shafts 18 and 19 and shaft of cam 13 as .well as thelocation of the actuating means at the side of the jig instead of aboveor below, are features which in combination form the subject matter ofPatent Number 919,258 granted April 20, 1909.

The sieve box 8 being supported from the upper end of the links 24, 25,26, 27, would be free to swing endwise and drop until its motion wasarrested by the hutch if it were not for the links 32 and 33 which areprovided to restrain and limit the movement of the sieve box. 7

Secured to two of the uprights 5 are castings 34 provided with anapertured lug 35, through the apertures of which eye-bolts 350 pass. Thelinks 32 extend through the eyes of said eye-bolts, and collars orequivalent devices 36 are secured to the links 32 on the sides of theeye-bolts 350 remote from the pivotal connections of the links 32 withthe sieve box.

The links 33 extend in a general horizontal direction and are passedthrough apertures in the castings 37 which are secured to thelongitudinal timbers 6. Secured to the links 33 are collars orequivalent devices 38, between which collars and the castings 37 areretained spiral springs of the open or compression type 39.

The operation of the apparatus is as follows: The levers 16, 17, beingdepressed, the links 24;, 25, 26 and 27 are elevated; but the links 25and 26 being constrained in their movements by the collars 36 and links32 taking against eye-bolts 350 forming stops for the collars 36 andlinks 32, the upper ends of the links 25 and 26 can only move throughpart of an arc of a circle with a radius from eye-bolts 350 to pivots40, and as they move through these paths, the springs 39 are compressed.This movement is continued until the cam 13 clears the collar 14,

when the weight of the sieve box and its contents will cause the sievebox to fall; but the springs 39 being under compression, will move thesieve box to the left to the initial position corresponding to positionof parts as shown by Fig. l, the strength of the springs being such thatthe sieve box practically falls to its lowest position before thesprings act to return the box to its initial posit-ion.

In the modification as shown by Fig. 5, the links 320 are substitutedfor the specific form of the links 32, shown by the other figures of thedrawings, and these links are secured to shafts 321 which are retainedin a vertical position by being passed through apertures in lugs formedon castings 322, which are secured to the upright timbers 5. The upperends of the shafts 321 are screw-threaded and are provided with nuts andwashers indicated generally by the numeral 323, and between said washersand lugs 324 on the castings 322 are retained springs of the open orcompression type in a manner very similar to the arrangement shown byFig. 1 of the drawings.

The operation of the modified device is as follows: When the sieve israised, the links 320 will swing to the right, Fig. 5, about theirpivots 325 as axes. Then the sieve box is permitted to drop, the springswill be compressed, allowing the sieve box to move back to its originalposition over a line of travel lower than that-by which it moved to itshighest position.

It will be understood that one spring can be used in place of the twoshown by the drawings, or more than two can be used without departingfrom the spirit of this invention, but the construction shown by thedrawings is the preferred construction.

The numeral 50 designates an adjustable bumper or primary stop for theshaft 15 and consequently the sieve-box, and the numeral 51 (Fig. 5)designates nuts or collars on shafts 321 to limit the upward movementsthereof. These nuts or collars 51 on shafts 321 eoact with lugs 32 1 andshafts 321 to form stops for the links 320 and the springs heretoforedescribed tend to hold the adjacent ends of the links 320 against thestops.

What is claimed and desired to secure by Letters Patent is:

The combination with a hutch, of a sieve box therein, means for raisingsaid sieve and allowing same to fall periodically, guiding means for thesieve box comprising side links connected at one of their ends to saidsieve and at the other of their ends to said hutch, one of saidconnections of said links permitting a limited motion of said link onits connected part, positive stops for limiting said motion at oneextreme and springs tending to hold said links against said stops andprimary stops for limitingrthe lowest level of said sieve box.

In testimony whereof, I affix my signature in the presence of twowitnesses.

GRANT B. SHIPLEY.

Witnesses:

H. C. Casn,

FRANK E. DENNETT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. C.

